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CASH REGISTER C. W. GREEN CASH REGISTER Aug. 1, 1933.

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CASH REGISTER Filed OC. 20, 1925 18 Sheets-Sheet 16 C. W. GREEN CASH REGISTER Aug. 1, 1933.

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Patented Aug. 1, i1933 l l UNITED STATES PATENT OFFICE CASH REGISTER Charles W. Green, Ilion, N.' Y., assignor, by mesne assignments, to the National Cash Register Company, Dayton, Ohio, a Corporation of Maryland Application October 20, 1925. Serial No. 63,695 19 Claims. (Cl. 235-2) It is a primary object of the present invention a particular form of transaction made by a parto provide an improved construction of a cash ticular clerk for a given amount, involving dolregister or accounting machine which is adapted lars, dimes and cents, the ve vkeys necessary to to register and record a series of items entered represent the transaction may be successively deinto the machine and to print the totals -of such pressed to their latched positions, without caus- 60 series of items accumulated during any specified ing any movement of the key coupler. The fact period. 'Ihe machine upon which the present that no movement of the key coupler is required improved constructions are shown applied, is` upto this time 'insures a substantially uniform provided with a pluralty of totalizers for sepatouch in the operation of al1 of the keys to be rately accumulating'items of diiierent classes or latched. In the past, Wherever provision has 65 sub-divisions and these totalizers are provided been made in a key operated machine fpr a suc- With suitable means for restoring them independcessive latching of keys to the key coupler, it ently to zero position, at the Will of some perhas been necessary to lraise the coupler by the son who is authorized to reset them. initial operation of the rst key depressed, with In the preferred embodiment of the invention, the result that a variable amount of touch has 70 as disclosed in the drawings, it is applied to a been required in the depression of a series of machine of the key operated type, in Which a key keys to represent a transaction. When the decoupler is directly operated by the depression of sired keys have been latched to the coupler the one or more of the keys and the coupler in turn, operation of the machine may be completed by through suitable connections, rotates a main the full depression of any one of the keys already 75 operating shaft Within the machine. Diierenpartially depressed or by the full depression of tial mechanism directly operated by the keys for the last key to be latched to the coupler. adjusting item' printing wheels and also driving Provisions have been made for the release of the elements of the totalizers is provided, as is the keys which have been latched to the coupler usual in this type of machine. An improvement during an operation, so that these keys may be in the differential mechanism consists in the properly restored to theirnormal positions bemounting of diierential operating cams as seplow the coupler. This release of the keys is arable units on the several keys, and this serves effected, entirely automatically and remains efto greatly simplify the manufacture and assemfective at the time the key coupler is restored bly of these parts. l to its normal position, so that a weighted bail S0 Among the many features included in the presextending across all of the keys may return to ent invention is a novel form of key latch and normal all those keys previously latched to the key releasing mechanism, which is simple in concoupler. struction and reliable in action, and has numer- In order that any error which may have been 35 ous advantages which will be apparent from the made in the partial depression of the keys may 90 full disclosure vwhich will be given. be corrected and the keys restored, without com-4 According to the present invention, the various pelling a full operation of the machine, which operating keys, in their normal positions, are would result in the entry of 'an erroneous record, maintained somewhat below the key coupler so a manually operable keyreleasing device is prothat an initial depression of any key will not cause vided, and in accordance with the present inven- 9U any movement of the coupler. Itiis during this tionthis device may co-operate with certain porinitial depression of a key that it becomes latched tions of the automatic key releasing mechanism to the key coupler without causing any moveto eiect a release of latched keys-and a restorament of the latter. The obvious advantage of tion of the parts to normal by the aid of the this construction is that it permits an easy touch Weighted bail. In this connection, interlocking for the latching of any desired keys which may means are also provided to prevent the misuse be selected for operation upon a complete operaof the error key after the operating Akeys have tion of the machine. In the normal operation of been moved'beyond coupling position.V the machine, it is intended that the several keys In adapting the invention for the performv 50 which are to be operated for the entry of a ance of the objects stated above, the latching 10" particular item shall be latched to the key coupler mechanism, in the illustrative machine herein successively and singly, so that the operator may disclosed, has been mounted on 'a separate verticontrol the operation of the machine by the use cally movable frame, which is independent of of but a single finger of one hand. Thus, Where the key coupler but is connected for movement a series of keys are to be depressed, to represent at all times by the latter. By the use of this construction the keys, when partially depressed, are latched to the vertically movable frame and when the operation of the machine is continued by the full depression ofv one o f the keys all of the latched keys are held, not only by the special latches but also by the usual lip on the key coupler which enters a notch in the rear end of each of the depressed keys. It is toward the end of the down stroke of the `keys that they are released from the special latches on the vertically movable frame, due to divergence of the paths of movement of the ends of the keys and the latchesl and, on the return stroke of the keys, the latches are held out of active position so that it is merely by the engagement of the lip of the coupler with` the notches of the keys that the latter are held in coupled position. When the coupler reaches its normal position the lip will have been fully withdrawn from the notches in the keys so that they may be fully restored by the weighted bail. It may be understood that the special latching mechanism preferably comprises a series of separately movable members, such as bails, one of which is related to each groupl of keys; for example, one member may be associated with the clerks keys, another with the transaction keys, another with the dollars amount keys, another with the dimes amount keys, etc. In connection with this form of latching mechanism, the present invention includes suitable connections for preventing a full operation of the machine until a key in one of the groups has been partially depressed. In the embodiment herein disclosed these connections vco-operate with the latch member or bail associated with the clerks group of keys so that a full operation of the machine is prevented unt' one of the clerks keys hasbeen partially depressed. This mechanism isso constructed, however, that no particular sequence of operation of the keys is compelled and it is immaterial whether the clerks key is depressed prior to or after the depression of either the transaction or amount keys. This form of operation which compels the depression of ay clerks key before the machine is fully released for operation,is known as the "closed keyboard. In order that the machine may at times be operated on the open keyboard, so that a depression of a clerks key will not be compelled, a suitable manipulative device is provided, together with connections to the mechanism normallycom pelling the operation of 'a clerks key. On'y proper adjustment of this manipulative means, therefore, the machine may be made to operate either on the open or closed keyboard.

Another important improvement which is effected by the present invention is the simplincation of mechanism for controlling the engagement of one or a plurality of totalizers. Machines of the general type, on which the present linvention has been disclosed, are usually provided with connections from the main operating shaft for causing the engagement with the actuators of thel totalizer of a single totalizer machine or of a selected totalizer of a machine equipped with more than one totalizer. In machines of the latter type the engaging mechanism is frequently not only designed to select the totalizer which it is desired to operate for the entry of a particular item, but itis further usually. provided with means under the control of cer-y tain special keys, such as the Charge and Paid out keys of a cash register, so that an item may be prevented from being entered into any of the totalizers. This function of preventing the en- Atransaction being performed. It is particularly gagement with the actuators of a totalizer which has been selected, is known as a throwou function. According to the present invention the totalizer engaging mechanism is adapted both to select one of a plurality of totalizers for engagement with the actuators and to causea throwout function of the selected totalizer upon the operation of a special key.

In accomplishing this result a great simplification has been introduced, by the present invention through the use of a single shiftablej and pivoted slide for bothselecting a totalizer and i providing the throwout function. The slide is normally adapted tol be rocked, upon an operation of the machine, about a pivot at one end, and when so rocked it will normally cause the engagement of one of the totalizers.Q Operation of a totalizer selecting element, such as a clerks key, is designed to shift the slideV by moving its pivotal point so that, during the subsequent operation of the machine, therst totalizer will not be affected but another totalizer will be rocked into engagement with the actuators. Still further movement of the slide by shifting the` pivotal point still further by connections from a special manipulative means, ,such as a Paid outf key, will serve to completely disengage the slidel from the lioperating mechanism, which normally caused it to engage one or another of the totalizersL Thus, when the -slide is in this position, none of a plurality of totalizers will be engaged with the actuators. -In order that a' totalizer which is not intended for operation will `not be accidentally rocked, a special detent element is placed under control of theselecting slide and 110 this element will prevent the movement of one or another of the totalizers. Suitable means 'is similarly provided to preventthe rocking of any totalizer when a throwoutkey hasbeen operated.

In carrying out the present invention it has been found an advantageous feature to employ a single train of connections from `all of the controlling keys to the single controlling slide. These connections may include a rock shaft ex- 120 tending across the clerks and special transaction keys, so that a cam shoe may be pinned to the shaft, adjacent any of the desired keys, in order that pins carried by such keys may rock the shaft to different extents to either select a totalizer 125 or perform a throwout function, By applying the principle of the totalizer control mechanism, disclosed herein, the system of selection and elimination of totalizers for engagement with the actuators may be very readily varied, so that 130 if desired, two totalizers may be engaged at one time with the actuators, and one may be eliminated without eliminating the other, or both may be eliminated simultaneously.

AThe machine disclosed in the present application' is equipped with indicating mechanism adapted to indicate to the front and to the rear, not only the amount'of a transaction but the clerk making the entry as well as the nature `of the in connection with the latter indicators that a novel construction is provided. In order that the v transactions may be indicated by full words rather than by the customary abbreviations, such as P. O. for Paid out, R. Acct. for Received on accoun etc. the machine herein disclosed is provided with a series of long, narrow indicator plates extending across the full width of the lmachine and mounted at opposite ends on pairs of arms so that it may be moved from a lower, concealed 150 

